Winding and setting mechanism for watches.



E. HART.

WINDING AND SETTING MECHANISM FOR WATCHES.

APPLICATION FILED NOV.1, 1909.

944,860. Patented Dec.28, 1909.

Cir

UNITED STATUES PATENT OFFICE.

EDWIN HART, F WATERIBURY, CONNECTICUT ASSIGNOR TO THE NEW ENGLAND WATCH(10., OF WATERBURY, CONNECTICUT, A CORPORATION.

WINDING AND SETTING MECHANISM FOR WATCHES.

Specification of Letters Patent.

Application filed November 1, 1909.

Patented Dec. 28, 1909.

Serial No. 525,792.

T 0 all whom it may concern:

Be it known that I, EDWIN I'IART, a citizen of the United States,residing at aterbury, in the county of New Haven and State ofConnecticut, have invented a new and useful Improvement in \Vinding andSet.- ting Mechanism for YVRtClIGS; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings andthe numerals of reference marked thereon, to be a full, clear, and exactdescription of the same, and which said drawings constitute part of thisspecification, and represent, in-

Figure 1 a broken view in elevation of a watch provided with my improvedwinding and setting mechanism with the parts in position for setting.Fig. 2 a corresponding view showing the parts in position for winding.Fig. 3 a plan view thereof.

My invention relates to an improved stemwinding and stem-settingmechanism for watches of the class of stem-winding and stem-settingwatches in which the stem is pulled out for throwing the mechanism intoposition for setting, the object being to produce a simple, compact andreliable device designed with particular reference to having its twomain parts shaped so as to permit them to be stamped out of wroughtmetal without injury to the dies employed, and so as to reduce wear inuse to the minimum.

WVith these ends in view my invention consists in a watch having certaindetails of construction as will be hereinafter described and pointed outin the claim.

In carrying out my invention, as herein shown, I employ a two-armedsheetanetal lever 2 hung upon a pivot 3 and having its upper arm 4entered into an annular groove 5 in the longitudinally movable androtatable stem 6 upon which the winding pinion 7 is loosely mounted andthrough which the stem is free to be longitudinally moved, this pinionbeing normally coupled with the stem for the discharge of its windingfunction as will be described later on. The inner arm 8 of the saidlever 2 is formed with a locking nose 9 and a stop nose 10. The saidlocking nose 9 coacts with a corresponding nose 11 formed upon asheetmetal lever 12 which is hung upon a pivot 13 and formed with an arm14 entering an annular groove 15 in a sliding sleeve 16 mounted upon theinner end of the stem 6 for sliding movement thereupon, as well. as forrotation therewith for which latter purpose the stem 6 is squared as at1'7, the said sleeve being formed with a corresponding opening which isnot shown. The outer end of the said sleeve is furnished with clutchteeth 18 corresponding to clutch-teeth 19 upon the lower face of thepinion 7, while the inner end of the sleeve is formed with a pinion 20having spur-teeth meshing into a wheel 21 of the dial work which neednot be described. The stop nose 10 of the inner arm 8 of the lever 2coacts with a camsurface 22 formed upon the lever 12.

A spring 23 hooked at one end into a notch 24 in the arm 8 of the lever2, and at its outer end into the notch 25 in the lever 12, provides foroperating the levers, exerting a constant effort upon the lever 12 tohold the same in position to maintain the sleeve 16 in the position uponthe stem 6 in which it is coupled with the wheel 7 which is thus coupledfor rotation with the stem 6 for the winding function thereof. In thisposition of the parts the locking noses 9 and 11 and the stop-nose 10are out of play, as

shown by Fig. 2. hen, however, the stem 6 is pulled outward preparatoryto setting, the lever 2 is swung upon its pivot 8 by the action of thespring 23, whereby its arm 8 moves inward toward the stem 6 and alsodownward. In this inward and downward movement of the arm 8 of the lever2, its locking-nose 9 en ages with and rides over the adjacent cam-likeouter edge of the locking-nose 11 of the lever 12, whereby the same isturned on its pivot 18 against the tension of the spring 23, its arm 14Lswinging inward and. carrying with it the sleeve 16 which is 1 thusdisengaged from the winding-wheel 7 and engaged with the wheel 21 of thedial work. After this has transpired and just before the arm 8 of thelever 2 completes its inward and downward swinging movement asdescribed, its locking-nose 9 rides and snaps over the end of thelocking-nose 11 as shown in Fig. 1, whereby the levers 2 and 12 arelocked against the power used in setting, 2'. 0., the power applied tothe rotation of the stem 6 by the user of the watch through his fingers.If the levers were not locked at this time, as described, the sleeve 16would be moved outward on the squared portion 17 of the stem 6 by theriding of the spur-teeth of the pinion 20 out of mesh with the teeth ofthe dial-wheel 21. The locking of the two levers takes place, be itnoted, at a pointinside of a line drawn between the pivots 3 and 1.3which line intersects the stem 6 at an acute angle. As the parts moveinto their iinal setting positions as shown in Fig. 1, the stop-nose 10engages with the cam-surface 22 of the lever 12, whereby the lever 2 isprevented from swinging too far inward when the parts are adjusted forsetting since it is apparent that the swinging movement of the lever 2at this time must be arrested at the point where its nose 9 will coactwith the nose 11. of the lever 12. When the stem (3 is again pushedinward to restore the parts to their normal or winding positions, thenose 9 of the lever 2 pressing against the nose 1.1 of the lever 12forces the same ust enough downward against the tension of the spring topermit the nose 5/ to ride over the nose 11. The inward thrust upon thestem (3 being continued, the lever 2 is forced into the position inwhich it is shown in 2 against the tension of the spring which. spring,however, is left free to sving the lever 12 into the position shown inbig. 2 whereby the sleeve 16 is moved upward and coupled with thewinding wheel 7.

i wish to call attention to the tart that in the setting adjustment ofthe parts the power of the spring 23 is so developed as to cause thelever 2 to assume and hold the position shown in Fig. 1 of the drawiugsthis heing due to the particular construction and arrangenient oi thelevers and 12 and the spring 7 o. J'il the other hand when the stein l)is push d inward, the lever 2 is swung on its pivot 3 so as to raise thenotch and the upper lobe oi the spring 23 whcrehv the power oi thespring is changed and thrown upon the lever 12 which is then turned onits pivot 1 so as to move the sleeve 15 outward on the square portion lloi the stern tor the engagement oi. the clutch-teeth 15 with thecorresponding clutclriceth 19 upon the lower tace ot the pinion T. itwill thus be seen that the notch L1; in the lever Q tor-ins, as it were.the tension point oi tl spring 2? and that as this notch is changed inposition by the swinging oi. the lever 2 1 upon its pivot 3 the poweroil? the spring is developed a t one tune so as to throw it upon l l l ll l l l the lever 2 and at one time so as to throw it upon the lever 12all as just above described.

I particularly wish to point out that the levers 2 and 12 are shapedwith particular reference to being stamped out. of wrought nietalwithout wearii'ig the dies to any appreciable extent as would result ifone lever was provided with a sharp tooth and the other constructed withan acute notch lo receive the same. Furtlierniore, levers constructed inaccordance with inv invention do not in the coaction of their noses Eand 10 wear or jar. or strain the parts in use so that my improvedmechanism is very reliable in operation and is exposed to ahnost nowear.

la a winding and setting niechanisin ior watches, the combination with alongitudinall v' movable and rotatable #110121 of a winding-wheelloosel) mounted upon the stem and carrying upon its inner 1 2100 onenien'iher oi a clutch a sleeve non-rotatabl v inounled upon the saidstein on which it is longitudinally movable and provided at its outerend with a clutch-ineniher, and at its inner end with spur-teeth adial-wheel in position to coaetwith the said spur-teeth, a twoarniedlever having one oi its arms connected vith the said stein for operationthercb'v and nose stop-nest; a lever connected \\l the sleeve tor theoperation thereot and haviiig a nose for eoaclion with the looking noseol? the s id two-armed lever, and a spring for the said levers thelocking noses L? the two levers operating to lock the levers in theirsetting positimis by the eng 'cnicnt the two noses on a line inside of aline 5 assing through the pivots ot the two levers and the stop-nose oithe two-arn1ed lever ongaging with the other lever to prevent thetwo-armed lever ilroin swinging too tar invard when the parts arepositioned 't'or setting.

in tcsthnoni' wherco't. have signed this speciiication in the presenceoi two suhscrihing witnesses.

